Binaural hearing aid system for compensation of microphone deviations based on the wearer's own voice

Abstract

A hearing aid system is enabled for binaural microphone adjustment by way of the wearer's own voice. The hearing aid system has a first and a second hearing aid having a first and a second acousto-electric converter. The converters have a signal link with a signal processing unit which determines and compensates for signal deviations caused by the first and second acousto-electric converters on the basis of signals from the wearer's own voice. The wearer's own voice is recognized by a special facility.

The invention claimed is: 
     
       1. A hearing aid system to be worn by a hearing aid wearer, the hearing aid system comprising:
 a first hearing aid and a second hearing aid, said first hearing aid having a first acousto-electric converter configured to convert an incoming acoustic signal into a first electrical signal, and said second hearing aid having a second acousto-electric converter configured to convert a second incoming acoustic signal into a second electrical signal; 
 a signal processing unit connected, by way of a signal link, with said first and second acousto-electric converters; 
 said signal processing unit being configured to determine and to compensate for signal deviations between the first and second electrical signals on the basis of the first and second electrical signals from the wearer's own voice, wherein the wearer's own voice is characterized by a symmetry of the first and second audio signals at the first and second acoustoelectric converters; 
 a facility configured for recognizing the wearer's own voice, said facility having a signal link with said first and the second acousto-electric converters and being configured to signal to said signal processing unit a recognition of a signal from the wearer's own voice. 
 
     
     
       2. The hearing aid system according to  claim 1 , wherein said facility for recognizing the wearer's own voice is configured to recognize a signal from the wearer's own voice on a basis of a level of the first and/or the second electrical signal. 
     
     
       3. The hearing aid system according to  claim 1 , wherein said facility for recognizing the wearer's own voice is configured to recognize a signal from the wearer's own voice on a basis of a phase relationship between the first and second electrical signals relative to one another. 
     
     
       4. The hearing aid system according to  claim 1 , wherein said facility for recognizing the wearer's own voice is configured to recognize a signal from the wearer's own voice on a basis of a frequency distribution of the first and/or the second electrical signal. 
     
     
       5. A method of adjusting a hearing aid system, the hearing aid system having:
 a first hearing aid and a second hearing aid, the first hearing aid having a first acousto-electric converter and the second hearing aid having a second acousto-electric converter; and 
 a signal processing unit having a signal link with the first and the second acousto-electric converters; 
 the method comprising the following steps: 
 providing the hearing aid system with a facility for recognizing a wearer's own voice, the wearer's own voice being characterized by a symmetry of the first and second audio signals at the first and second acoustoelectric converters, and the facility for recognizing the wearer's own voice having a signal link with the first and second acousto-electric converters; 
 acquiring with the first and second acousto-electric converters a first and a second acoustic signal, respectively, and signaling with the facility for recognizing the wearer's own voice a recognition of a signal from the wearer's own voice to the signal processing unit, and converting the first and second acoustic signals into a first electrical signal and a second electrical signal, respectively; 
 determining signal deviations between the first and second electrical signals on a basis of the first and second electrical signals from the wearer's own voice; and 
 compensating for the signal deviations of the first and the second electrical signals in the signal processing unit. 
 
     
     
       6. The method according to  claim 5 , wherein the facility for recognizing the wearer's own voice recognizes a signal from the wearer's own voice on a basis of a level of the first and/or the second electrical signal. 
     
     
       7. The method according to  claim 5 , wherein the facility for recognizing the wearer's own voice recognizes a signal from the wearer's own voice on a basis of a phase relationship of the first and second electrical signals relative to one another. 
     
     
       8. The method according to  claim 5 , wherein the facility for recognizing the wearer's own voice recognizes a signal from the wearer's own voice on a basis of a frequency distribution of the first and/or the second electrical signal.